Audited Supplier
250 kn capacity screw jack metric machine screw designed for unwind stands or calender stacks or electron beam adjustments. Available in 10:1 and 40:1 worm gear ratios. There are no standard stroke and all worm gear screw jack systems travel lengths are built with customers required. Available stroke from 10mm to 5500mm.
1. Upright or inverted installation with maximum static load capacity 250 kN in tension or compression.
2. Self-locking trapezoidal screw with no need brake or lock mechanisms to hold position.
3. 80mm diameter lifting screw, 10mm pitch (single start thread).
4. Available in 10:1 and 40:1 ratios.
5. Custom travel length, from 10mm to 5500mm.
6. Translating screw (travelling screw jacks), keyed screw for anti-rotation (keyed screw jacks), and rotating screw with traveling nut (travelling nut screw jacks) as the standard configurations.
7. Worm screw is rotated by a hand wheel with crank handle (manual screw jack) or by a electric motor (electric screw jack).
8. Can be applied either individually use or combined into a exactly synchronized lifting system, linked by connecting shafts, bevel gears and couplings etc.
We use the best materials to guarantee the performance and lifetime of the stainless steel screw jacks you purchased.
- Trapezoidal screw material - C45 steel. Customized stainless steel 304, 316.
- Worm shaft material - C45 steel, heat treatment. Customized stainless steel 304, 316.
- Worm gear material - high strength bronze.
- Housing material - ductile iron. Customized stainless steel 304, 316.
- Traveling nut - high strength bronze.
- Safety nut - high strength bronze.
1. Note: The dark gray figures in the tables indicates operational restrictions due to thermal limits. Selection of screw jacks using these figures should only be carried out in consultation with our engineers. When your selection is made within the areas shaded dark gray, you will need to reduce duty cycle or choose the bigger size screw jack in order to allow effective heat dissipation.
3. H=high ratio, L=slow ratio.
4. Nm=input torque required, kW=input power required. Find out front view, side view and top view assembly drawings.
* Free 2D AutoCAD Assembly Drawings (PDF, DWG, DXF Format).
* Free 3D CAD Model Assembly Drawings (STP/STEP, IGS/IGES, SLDPRT, MODEL, CATPART Format).
Before packing, all Customers' orders will be inspected following Production Drawings and Inspection Report.* Inspection of Screw Jack: model, screw diameter, screw pitch, installation type, basic design, stroke length, screw end types, wormgear ratio, worm shaft diameter, input shaft types, motor flange types, accessories, lubrications, housing color, orders with special requirements, smooth lifting.
* Inspection of Bevel Gearbox: model, input shaft diameter, output shaft(solid or hollow) diameter, input flange dimensions, shaft arrangements, rotation directions, mounting positions, gear ratios, accessories, lubrications, housing color, orders with special requirements.
* Inspection of Lifting System: except above points, must inspect the order quantities of jacks, gearboxes and others.
* Express(Air Courier): Factory to customers' company by FEDEX, DHL, UPS, TNT. Incoterms: EXW, DDU.* Sea Freight: Factory to destination seaport by Vessel. Incoterms: CIF, FOB, EXW, CFR.
* Air Freight: Factory to destination airport by Airplane. Incoterms: CFR, EXW, FCA, CPT, CIP.
* Additional Options (Door to Door): Train Transportation, Truck Transportation, Ocean Shipping.
* Asia: Malaysia, Indonesia, Singapore, Pakistan, Philippines, Vietnam, United Arab Emirates, Thailand, Saudi Arabia, Iran, Turkey, India, Sri Lanka, Israel, Jordan, Kuwait, Qatar.* America: United States, Mexico, Canada, Chile, Bolivia, Brazil, Colombia, Dominican Republic, Honduras, Argentina, Peru.
* Europe: Russia, Germany, Turkey, France, United Kingdom, Italy, Spain, Ukraine, Poland, Romania, Netherlands, Belgium, Greece, Czech Republic, Portugal, Sweden, Hungary, Belarus, Austria, Switzerland, Bulgaria, Denmark, Finland, Slovakia, Norway, Ireland, Croatia, Georgia, Armenia, Lithuania, Slovenia, Estonia, Cyprus, Luxembourg, Iceland.
* Australia: Australia, New Zealand, Fiji.
* Africa: South Africa, Egypt, Ethiopia, Nigeria.
